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प्रश्न
Find the odd one out and give its explanation.
विकल्प
Zinc coating
Tinning
Electroplating
Calcination
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उत्तर
Calcination
Explanation-
Calcination is a process involved in extraction of carbonate ores while others are methods used for prevention of corrosion.
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संबंधित प्रश्न
Name two metals which are found in nature in the free state.
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In making ships
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b) What is the group of this element?
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Metals form positive ions while non- metals ______.
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(a) electronic configuration
(b) nature of oxides
(c) oxidizing or reducing action
(d) conductivity of heat and electricity
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The metal which does not react with water or dilute H2SO4 but reacts with concentrated H2SO4 is _________
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Mercury, silver, gold are highly reactive metals.
Explain the characteristics of ionic compounds.
Explain concept with example/explain with the help of a balanced equation.
Ionic bond and ionic compounds
Explain concept with example/explain with the help of a balanced equation.
Calcination
Give the reaction involved during extraction of zinc from its ore by
- roasting of zinc ore
- calcination of zinc ore
The given reaction shows one of the processes to extract the metals like Iron and Manganese.
\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]
Identify the substance oxidised and reduced in the above reaction.
The given reaction shows one of the processes to extract the metals like Iron and Manganese.
\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]
Give a reason why Aluminium is preferably used in thermite reactions.
